package com.itheima.reggie.config;

import com.itheima.reggie.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;

import java.util.List;

@Slf4j
@Configuration
public class SpringMvcSupportConfig extends WebMvcConfigurationSupport {
    /**
     * 配置静态资源映射
     * @param registry
     */
    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info("进行静态资源映射........");
        registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
        registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
    }

    /**
     * 扩展消息转换器
     * @param converters
     */
    @Override
    protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
        //创建消息转换器
        MappingJackson2HttpMessageConverter httpMessageConverter = new MappingJackson2HttpMessageConverter();
        //设置具体的对象映射器
        httpMessageConverter.setObjectMapper(new JacksonObjectMapper());
        //通过设置索引，让自己的转换器放在最前面，否则默认的Jackson转换器会放在前面，用不上我们设置的转换器
        converters.add(0,httpMessageConverter);
    }
}
